Drops the function keyword and uses only func(){} syntax as per the POSIX specification: http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_09_05

Lars Moelleken 2015-11-06 13:41:50 +01:00
parent 63bc8e47ae
commit fed196a67d

@ -166,7 +166,7 @@ echo "global_var = $global_var" # global_var = 37
##### _Good:_ ##### _Good:_
```shell ```shell
function func_good() { func_good() {
local local_var="" local local_var=""
local_var=37 local_var=37
echo $local_var echo $local_var
@ -187,7 +187,7 @@ In the next example, lots of global variables are used over and over again, but
```shell ```shell
#!/bin/bash #!/bin/bash
function parse_json() { parse_json() {
parent_prop=$1 parent_prop=$1
prop=$2 prop=$2
@ -204,7 +204,7 @@ function parse_json() {
| sed "s/^$prop|//g"` | sed "s/^$prop|//g"`
} }
function parse_ubuntuusers_json() { parse_ubuntuusers_json() {
json=`curl -s -X GET 'http://suckup.de/planet-ubuntuusers-json/json.php?callback='` json=`curl -s -X GET 'http://suckup.de/planet-ubuntuusers-json/json.php?callback='`
parse_json "posts" "title" parse_json "posts" "title"
@ -231,7 +231,7 @@ In shell scripts, it is less common that you really want to reuse the functional
```shell ```shell
#!/bin/zsh #!/bin/zsh
function parse_json() { parse_json() {
local json=`cat $1` local json=`cat $1`
local parent_prop=$2 local parent_prop=$2
local prop=$3 local prop=$3
@ -249,7 +249,7 @@ function parse_json() {
| sed "s/^$prop|//g" | sed "s/^$prop|//g"
} }
function parse_ubuntuusers_json() { parse_ubuntuusers_json() {
local temp_file=`mktemp` local temp_file=`mktemp`
local json=`curl -s -X GET 'http://suckup.de/planet-ubuntuusers-json/json.php?callback=' -o $temp_file` local json=`curl -s -X GET 'http://suckup.de/planet-ubuntuusers-json/json.php?callback=' -o $temp_file`
@ -331,7 +331,7 @@ function my_bad_func {
##### _Good:_ ##### _Good:_
```shell ```shell
function my_good_func() { my_good_func() {
... ...
} }
@ -341,7 +341,7 @@ Private or utility functions should be prefixed with an underscore:
##### _Good:_ ##### _Good:_
```shell ```shell
function _helper-util() { _helper-util() {
... ...
} }
``` ```
@ -352,7 +352,7 @@ After a script or function terminates, a `$?` from the command line gives the ex
##### _Bad:_ ##### _Bad:_
```shell ```shell
function my_bad_func() { my_bad_func() {
# didn't work with zsh / bash is ok # didn't work with zsh / bash is ok
#read lowerPort upperPort < /proc/sys/net/ipv4/ip_local_port_range #read lowerPort upperPort < /proc/sys/net/ipv4/ip_local_port_range
@ -370,7 +370,7 @@ function my_bad_func() {
##### _Good:_ ##### _Good:_
```shell ```shell
function my_good_func() { my_good_func() {
# didn't work with zsh / bash is ok # didn't work with zsh / bash is ok
#read lowerPort upperPort < /proc/sys/net/ipv4/ip_local_port_range #read lowerPort upperPort < /proc/sys/net/ipv4/ip_local_port_range